KR101493611B1 - Splicing apparatis for tire semi-product - Google Patents

Abstract

A semi-finished product splicing apparatus for a tire according to the present invention is a device for pressing an end portion of a tire semi-finished product wound on a molding drum toward the outer circumferential surface of a molding drum and includes a moving frame installed to reciprocate in a direction parallel to the molding drum, And a multi-disc roll which moves backward in the direction of advancing toward or away from the forming drum by the advancing and retracting device. The advancing / retracting device has a body coupled to the moving frame and an operating rod movably installed in the body. The multi-disc roll includes a rotary shaft coupled to an end of the operation rod and rotatably coupled to a roll support coupled to an end of the operation rod, a cylindrical elastic support coupled to an outer circumferential surface of the rotary shaft, And a plurality of compression discs coupled to an outer circumferential surface of the elastic supporter for pressing the tire semi-finished product toward the outer circumferential surface of the shaping drum by rolling in the longitudinal direction of the shaping drum in a compressed state.

Description

Tire semi-product splicing device {Splicing apparats for tire semi-product}

The present invention relates to a tire semi-finished product splicing apparatus, and more particularly, to a tire semi-finished product splicing apparatus which minimizes air inflow generated in a green tire during the production of a green tire in a tire building process, To a tire semi-finished product splicing device.

Tires are usually manufactured through a refining process, a semi-finished product process, a molding process, a vulcanization process, and are shipped after an inspection process for selecting defective products in the manufacturing process. A brief description of each manufacturing process of a tire is as follows.

The refining process is a process of mixing all the components of the tire, such as natural rubber, synthetic rubber, reinforcing agents such as carbon black, and vulcanizing agents made of chemicals including sulfur, into rubber for tire, These include extrusion, rolling, cutting, and bead processes. The molding process is a process of assembling semifinished products sequentially into a molding drum to form a cylindrical rubber composite, and a cylindrical green tire is produced through a molding process. When a green tire is put into a mold serving as a mold and heat and pressure are applied, sulfur and carbon mixed in the rubber are completely cured, and the tire is finished with elasticity. A vulcanization process is a process of completing the semi-finished green tire with the tire.

The forming process is a primary molding process in which the semi-finished product and the body ply which are combined with the inner liner or the inner liner and the side wall are sequentially assembled to the forming drum, the bead is attached and the rubber balloon called the bladder is expanded to turn- . In the second molding process, the belt, the cap fly and the tread are assembled in order to manufacture a green tire having the shape of a tire.

In the process of manufacturing the first green tire in the molding process of the tire, the inner liner and the body fly are wound on the molding drum, the bead is inserted, and the turn-up is completed. Here, an important part of the primary green tire manufacturing is to remove the air inside the tire semi-finished product by using a splicing device when attaching the inner liner and attaching the body ply to the molding drum.

The roll used in the conventional splicing device was a plain roll or tapered roll which was knurled. However, since the flat rolls and the taper rolls are not made to match the diameters of the molding drums, a non-contact area with the tire semi-finished product occurs and the rolls can not reliably press the semi-finished tire. There is a problem that air can not be reliably removed.

Korean Patent Registration No. 0956232 (published on Mar. 10, 2010), Korean Patent Laid-Open Publication No. 2013-0073441 (published on Mar. 03, 2013) Korea public utility model publication 2012-0000379 publication (2012. 01. 13 disclosure)

SUMMARY OF THE INVENTION The present invention has been made to solve the problems of the conventional art as described above, and it is an object of the present invention to provide a multi-disc roll comprising a plurality of compression discs, The present invention provides a semi-finished product splicing apparatus capable of minimizing defects in finished articles of a tire and improving quality by minimizing the inflow of air generated inside a green tire during production of green tie.

In order to accomplish the above object, the present invention provides a tire semi-finished product splicing apparatus for pressing an end portion of a tire semi-finished product wound on a molding drum toward an outer circumferential surface of the molding drum and reciprocating in a direction parallel to the molding drum And a multi-disc roll which is moved toward and away from the forming drum by the advancing and retracting device. The multi-disc rollers of the present invention include: The advancement and withdrawal device has a body coupled to the movable frame and an operation rod movably installed in the body so as to be able to move backward in a direction to advance toward the forming drum or away from the forming drum. The multi-disc roll includes a rotary shaft coupled to an end of the operation rod and rotatably coupled to a roll support coupled to an end of the operation rod, a cylindrical elastic support coupled to an outer circumferential surface of the rotary shaft, And a plurality of compression discs coupled to an outer circumferential surface of the elastic support body in order to press the semi-finished product of the tire toward the outer circumferential surface of the shaping drum by rolling in the longitudinal direction of the shaping drum in a state of being pressed onto the tire semi-finished product being wound.

The tire semi-product splicing apparatus according to the present invention comprises a guide member which is coupled to the moving frame in a direction parallel to the moving direction of the roll support body and a guide member which is connected to the roll support body so that the roll support body can linearly move along the guide member And a moving member movably coupled to the guide member in a coupled state.

When a semi-finished product of a tire such as an inner liner or a body fly is wound on a forming drum, the multi-disc roll having a plurality of pressing discs is advanced toward the forming drum by the action of the advancing and retracting device, The semi-manufactured tire is pressed toward the molding drum while being deformed in accordance with the curvature of the semi-finished product of the tire and stably adhered to the surface of the semi-finished product of the tire. While the multi-disc roll is in close contact with the tire semi-finished product, So that the entire end of the tire semi-finished product can be reliably pressed toward the molding drum.

Further, the tire semi-product splicing apparatus according to the present invention includes a plurality of compression disks in which a multi-disc roll for pressing a tire semi-finished product toward a molding drum is supported by a cylindrical elastic support, and when the multi- Each of the compression discs is positioned while being compressed individually against the reaction force acting from the semi-finished product, and stably adhered to the tire semi-finished product. Therefore, the area of close contact with the semi-finished product wound on the forming drum is large, and the semi-finished product can be pressed more stably toward the forming drum.

In addition, according to the present invention, the semi-finished product splicing apparatus stably pressurizes the semi-finished product wound on the multi-disc roll forming drum including the plurality of pressing discs toward the forming drum so that air flows into the semi-finished tire products wound on the forming drum The phenomenon and air inflow inside the green tire can be minimized. Therefore, it is possible to minimize defects of finished articles of the tire, improve the quality of the finished articles of the tire, further improve the productivity of the finished product tires, and reduce the manufacturing cost due to reduction of the defective tire disposal amount.

1 is a front view showing a state in which a tire semi-finished product splicing apparatus according to an embodiment of the present invention is installed adjacent to a molding drum.
FIG. 2 is a side view showing a state where a tire semi-finished product splicing apparatus according to an embodiment of the present invention is installed adjacent to a molding drum.
3 shows a splicing operation of a semi-finished product splicing apparatus according to an embodiment of the present invention.

Hereinafter, the present invention will be described in more detail.

While the present invention has been described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention. . Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

FIG. 1 is a front view showing a state in which a tire semi-finished product splicing apparatus according to an embodiment of the present invention is installed adjacent to a molding drum. FIG. 2 is a cross- As shown in Fig.

1 and 2, a tire semi-finished product splicing apparatus 20 according to an embodiment of the present invention includes an end of a tire semi-finished product S wound on a molding drum 10, A moving frame 21 provided for reciprocating in a direction parallel to the forming drum 10; a forward and backward moving device 25 coupled to the moving frame 21; Disk roll 40 that is coupled to the advancing / retracting device 25 so as to be able to advance toward the forming drum 10 or away from the forming drum 10. [ Here, the shaping drum 10 is rotated in a certain direction by the shaping drum drive device 15 so that the semi-finished product S of the tire can be wound on the outer peripheral surface thereof. The present invention can provide a tire semi-finished product splicing device 20 that is capable of stably and uniformly transferring the end portion of a tire semi-finished product S such as an inner liner or a body fly, which is wound around the molding drum 10, It is possible to minimize the inflow of air between the tire semi-finished products S wound on the molding drum 10 and the inflow of air into the green tire.

The movable frame 21 is for reciprocally moving the advancing / retracting device 25 on which the multi-disc roll 40 is mounted along the longitudinal direction of the forming drum 10 and is movable in a direction parallel to the forming drum 10 Respectively. The moving frame 21 can be linearly reciprocated along the longitudinal direction of the forming drum 10 by a moving device (not shown) having various structures.

The moving frame 21 is provided with a guide member 22 for guiding the multi-disc roll 40 so as to stably move linearly. The guide member 22 is disposed in a direction parallel to the moving direction of the multi-disc roll 40 by the advancing and retracting device 25. [ In this guide member 22, the moving member 23 is slidably engaged. The shifting member 23 is engaged with the roll supporting body 30 which rotatably supports the multi disc roll 40 so that the roll supporting body 30 is guided by the guide 30 so that the roll supporting body 30 can be linearly moved along the guide member 22. [ do.

The advancing and retracting device 25 is for advancing the multi-disc roll 40 toward the forming drum 10 or moving it away from the forming drum 10, And reciprocates in the longitudinal direction of the forming drum 10 together with the moving frame 21. [ The advancing and retracting device 25 includes a body 26 coupled to the moving frame 21 and a body 26 that is movably installed on the body 26 so as to be advanced toward the forming drum 10 or retracted away from the forming drum 10 Has an operating rod (27).

At the end of the operating rod 27, a roll support 30 for rotatably supporting the multi-disc roll 40 is provided. The roll support 30 includes a coupling member 31 coupled to an end of the operation rod 27 and a pair of shaft support members 32 and 33 coupled to both ends of the coupling member 31 to face each other do. Each of the first shaft supporting member 32 and the second shaft supporting member 33 is provided with a bearing 34 for rotatably supporting both ends of the rotary shaft 41 of the multi-disc roll 40. The first shaft supporting member 32 is engaged with the moving member 23 provided on the moving frame 21. [ The roll support 30 is guided by the guide member 22 together with the shifting member 23 to stably form the forming drum 10 when the advancing and retracting device 25 is operated and the working rod 27 advances toward the forming drum 10. [ 10). When the operation rod 27 is retracted in the direction away from the forming drum 10, the roll support 30 is guided by the guide member 22 together with the moving member 23 to stably move away from the forming drum 10 As shown in FIG.

The multi-disc roll 40 is for pressing the tire semi-finished product S toward the forming drum 10 by being brought into close contact with the end portion of the semi-finished product S wound on the forming drum 10, Linearly moves along the radial direction of the drum 10 and linearly moves along the longitudinal direction of the forming drum 10 together with the moving frame 21. [ The MD roll 40 includes a rotary shaft 41 rotatably coupled to the roll support 30, a cylindrical elastic support 42 coupled to the outer circumferential surface of the rotary shaft 41, And a plurality of compression disks 43 to be coupled.

One end of the rotating shaft 41 is rotatably coupled to a bearing 34 coupled to the first shaft supporting member 32 and the other end of the rotating shaft 41 is connected to a bearing 34 As shown in Fig. The cylindrical elastic support 42 coupled to the outer circumferential surface of the rotary shaft 41 is for supporting the plurality of compression discs 43 in a resilient manner and may be made of various materials having flexibility such as silicone or rubber. The plurality of compression discs 43 are formed in a donut shape having a through hole at the center and are sequentially coupled to the outer peripheral surface of the elastic supporter 42.

This multi-disc roll 40 advances toward the forming drum 10 or retreats away from the forming drum 10 by the advancing and retracting device 25. [ A plurality of compression discs 43 are brought into close contact with the ends of the tire semi-finished product S wound on the molding drum 10 when the multi-disc roll 40 advances toward the building drum 10 by the advancing and retracting device 25 . When the movable frame 21 moves in this state, the plurality of compression discs 43 roll in the longitudinal direction of the forming drum 10 in a state of being closely attached to the semi-finished product S wound on the forming drum 10, The tire semi-finished product S wound on the drum 10 is pressed toward the outer circumferential surface of the forming drum 10.

Since the semi-finished product S is wound in a circular shape having a constant curvature when it is wound on the cylindrical forming drum 10, a plurality of pressing discs 43 which come into close contact with the semi-finished product S wound on the forming drum 10, Each end elevation is adjusted differently according to the curvature of the tire semi-finished product (S). In other words, the compression disc 43 disposed at the center is further compressed than the compression disc 43 disposed at the side, so that the end of the compression disc 43 protrudes further upward. As described above, since the plurality of compression discs 43 that are brought into close contact with the tire semi-finished product S wound on the molding drum 10 are adjusted while compressing the elastic supporter 42, The surface of the semi-finished product S changes in accordance with the curvature of the semi-finished product S of the tire. Therefore, the multi-disc roll 40 can stably adhere to the tire semi-finished product S wound on the forming drum 10. [

Hereinafter, the operation of the tire semi-finished product splicing apparatus 20 according to the embodiment of the present invention will be described.

As shown in FIGS. 1 and 2, the semi-finished product S of the tire such as an inner liner or a body fly is wound on the molding drum 10 while the multi-disc roll 40 is spaced apart from the forming drum 10 by a predetermined distance The advancing and retracting device 25 is operated to advance the multi-disc roll 40 toward the forming drum 10. [ 3, the multi-disc roll 40 advances toward the forming drum 10 and the ends of each of the plurality of pressing discs 43 provided thereon are wound on the forming drum 10, S). When the plurality of compression discs 43 are brought into close contact with the tire semi-finished product S, the compression disc 43 disposed at the center side further compresses the elastic supporter 42 as compared with the compression disc 43 disposed at the side, All of the plurality of compression discs 43 can stably adhere to the tire semi-finished product S wound on the molding drum 10 at the respective ends thereof.

The plurality of compression discs 43 are aligned with the curvature of the tire semi-finished product S and the moving frame 21 moves in a state of stably adhering to the tire semi-finished product S, Thereby rolling in the longitudinal direction of the drum 10. At this time, the plurality of compression discs 43 press the entire end of the tire semi-finished product S stably toward the forming drum 10.

The operation of the tire semi-finished product splicing device 20 according to the present invention will be described in more detail with reference to a case where the inner liner and the body ply are wound on the building drum 10, for example.

First, after the inner liner is wound on the forming drum 10, the tire semi-finished product splicing device 20 according to the present invention is operated in the same manner as described above to perform the splicing operation to the inner liner. Thereafter, when the body ply is wound on the inner liner, the tire semi-finished product splicing device 20 according to the present invention operates to remove air between the inner liner and the body ply. In this manner, the semi-finished product splicing device 20 according to the present invention is a device for semi-finished product S of tire by pressing a plurality of semi-finished products S, which are sequentially wound on the building drum 10, with a plurality of compression discs 43, It is possible to stably remove the air introduced into the space.

As described above, the tire semi-finished product splicing device 20 according to the present invention is configured such that when the tire semi-finished product S such as an inner liner or a body fly is wound on the molding drum 10, The multi-disc roll 40 having the compression disc 43 of the tire 10 advances toward the molding drum 10 and is deformed in accordance with the curvature of the tire semi-finished product S wound on the molding drum 10, So that the entire end of the tire semi-finished product S can be stably pressed toward the forming drum 10 by moving in the longitudinal direction of the forming drum 10 while rolling.

The tire semi-finished product splicing device 20 according to the present invention is also applicable to a multi-disc roll 40 for pressing the tire semi-finished product S toward the forming drum 10 by a plurality of pressing Each of the compression discs 43 includes a disc 43 and a plurality of compression discs 43 are attached to the elastic semi-finished product S individually in response to the reaction force acting from the tire semi-finished product S, And is stably brought into close contact with the tire semi-finished product (S). Therefore, the area of contact with the tire semi-finished product S wound on the molding drum 10 is large, and the tire semi-finished product S can be pressed toward the molding drum 10 more stably.

The tire semi-finished product splicing device 20 according to the present invention can stably produce the semi-finished product S wound on the molding drum 10 by the multi-disc roll 40 including the plurality of compression discs 43, It is possible to minimize the inflow of air between the tire semi-finished products S wound on the molding drum 10 and the inflow of air into the green tire.

In the present invention, the specific structure of the moving frame 21, the linear reciprocating structure, the specific structure of the advancing / retracting device 25 and the coupling structure with the moving frame 21, the specific structure of the multi- (25) are not limited to those shown and can be variously modified. In the drawing, two advancement / retraction devices 25 and two multi-disc rolls 40 are installed in one moving frame 21, but the number of the multi-disc rolls 40 and the forward / backward movement device 25 is And can be variously changed.

10: forming drum 20: tire semi-finished product splicing device
21: moving frame 22: guide member
23: moving member 25: forward movement device
26: body 27: working rod
30: roll support 31: connecting member
32, 33: first and second shaft support members 34: bearings
40: Multi-disc roll 41:
42: elastic support 43: compression disk

Claims (2)

A semi-finished product splicing apparatus for pressing an end portion of a semi-finished product of a tire wound on a forming drum toward an outer peripheral surface of the forming drum,
A moving frame installed to reciprocate along the longitudinal direction of the forming drum and the forming drum;
A body coupled to the moving frame and cooperating with the moving frame and coupled to the moving frame; and a working rod movably installed in the body to be retractable in a direction of advancing toward or away from the forming drum, ; And
A rotary shaft rotatably coupled to an end of the operation rod and coupled to an end of the operation rod so as to be able to move backward in a direction away from the forming drum by the advancing and retracting device, A cylindrical elastic support which is coupled to an outer circumferential surface of the rotary shaft and a pressing member which presses the tire semi-finished product toward the outer circumferential surface of the molding drum by rolling in a longitudinal direction of the molding drum while being pressed on the tire half- And a multi-disc roll having a plurality of compression discs coupled to an outer circumferential surface of the elastic supporter.
The method according to claim 1,
A guide member coupled to the moving frame in a direction parallel to a moving direction of the roll support; And
Further comprising a moving member movably coupled to the guide member in a state of being engaged with the roll support so that the roll support can linearly move along the guide member.

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